LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs - Performance Forum

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LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs
Tuesday, December 19, 2006 10:01 AM
Version 2.0, Revised: 09/11/2012

This info only holds true to LD9 engines in J-bodies, unless otherwise stated. I did not write all this info. & I do not claim to. I did compile it and formatted it for all your viewing pleasure. I hope you all enjoy. This all pertains to the LD9 engine.


***Overview***
The LD9 Twin Cam was a 2.4 L Quad 4 variant with balance shafts, debuting in 1996. Bore was decreased from 92 mm to 90 mm and stroke increased from 85 mm to 94 mm for better torque, and power was increased to 150 hp. The LD9 engine received a minor update halfway through the 1999 model year that eliminated the EGR, increased the compression ratio from 9.5:1 to 9.7:1, and switched from low impedance fuel injectors to high impedance. The history of this motor lies deep within the quad 4 motor. The Quad 4 was a DOHC straight-4 automobile engine produced by General Motors' Oldsmobile division in the 1990s. It was a modern engine for the time, but was criticized for roughness. Balance shafts were added in 1995, also known as a transitional year from the quad 4 to the renamed TWIN CAM variant, in 1996 2.4 (LD9) the complete engine makeover was accomplished. The name is derived from the engine's four cylinders and four valves per cylinder layout. There was a single overhead camshaft variant that made production as well, albeit for a brief time. The Quad 4 used an iron block and an aluminum head. The Quad 4 debuted in 1987 and was replaced after 2002 by the Ecotec. Quad 4 engines were produced at Oldsmobile's Delta Township, Michigan plant. In recent years, it has gained a minor following in hot rodding circles as a period style engine (which looks like a 1930's Offenhauser twin cam unit).
One of the best known articles comparing the quad 4 and twin cam. Best Article Ever!


***Brief Engine Differences / Changes***
96 Model Year
*Engine had sightly different oil passages, and water-pump problems.
*Large starter
*One wire front O2 sensor
*Low impedance Injectors
*GM Part # 12465154 Version 1a no longer offered. Replaced with Part # 12462258 Version 1b
*Had EGR Valve
*Domed Top Pistons
*9.5:1 CR
*Large knock sensor
*Head Casting number is 683-18


97-98 Model Year
*Oil passages and water-pump problems lessen. Manufacture process improvements lead to less core shift in engine block.
*Large starter
*One wire front O2 sensor
*Low impedance Injectors
*Had EGR Valve
*Domed Top Pistons
*9.5:1 CR
*Large knock sensor, 12mm x 1.25, ACDELCO Part # 2134456
*Head Casting number is 683-18

97-98/99 Chevrolet, Pontiac J & N (LD9)(2.4T)
Part # 12462258 Version 1b
Application
1997-98 Chevrolet, Pontiac J (LD9)(2.4T)
1997-98 Chevrolet, Pontiac, N (LD9)(2.4T)
1997-98 Oldsmobile, Buick
1999 Pontiac N (LD9)(2.4T)
12462258 Version 1b replaces: 12465154 Version 1a


99 Model Year
*Small starter
*One "purple" wire front O2 sensor
*High impedance Injectors
*No EGR Valve
*Flat Top Pistons
*9.7:1 CR
*New oiling passages
*Small knock sensor, 8mm x 1.25
*Head casting number is 779.
*New style water-pump


00-02 Model Year
*Small starter
*Three wire front O2 sensor
*High impedance Injectors
*No EGR Valve
*Flat Top Pistons
*9.7:1 CR
*New oiling passages
*Small knock sensor, 8mm x 1.25
*Head casting number is 779.
*New style water-pump


There are two basic engine block designs for swaps and repairing. 96-98 & 99-02.

Looking to replace your 96-98 LD9 in your 96-98 j-body with no modifications. 100% plug-n-play!
GM Performance offers a re-manufactured engine: Part # 12465449
Core engines to look for / from...
BUICK SKYLARK (1996 - 1998)
CHEVROLET CAVALIER (1996 - 1998)
CHEVROLET MALIBU (1997 - 1998)
OLDSMOBILE ACHIEVA (1996 - 1998)
PONTIAC GRAND AM (1996 - 1999)
PONTIAC SUNFIRE (1996 - 1998)
*Some 99 year LD9s from other vehicles other than J-bodies sometimes are the same as the above engine. IE. have EGR and the larger knock sensor hole.

Looking to replace your 99-02 LD9 in your 99-02 j-body with no modifications. 100% plug-n-play!
GM Performance offers a re-manufactured engine: Part # 12465498
Core engines to look for / from...
CHEVROLET CAVALIER (1999 - 2002)
CHEVROLET MALIBU (1999)
OLDSMOBILE ALERO (1999 - 2001)
PONTIAC GRAND AM (2000 - 2001)
PONTIAC SUNFIRE (1999 - 2002)
*Most 99 Model years are the same as the above engine. Grand Ams have no local sense to which motor they will have in 99.

Looking to replace your 96-98 LD9 in your 96-98 j-body with a 99-02 Engine. 90% plug-n-play!
First and for most, save all sensors , injectors, EGR, starter, intake manifold, and exhaust manifold...set it aside. You basically using EVERYTHING from your old engine, and swapping it over to the new engine. I mean gaskets and EVERYTHING. If you need any new "external" gaskets buy them for your model year, and not the model year of the engine. If you need new internal gaskets, buy them for your engines model year.
Man concerns / issues.
Knock sensors, Front O2 sensor, starter, EGR / Lack of EGR, and injectors / fuel rails.
First Knock Sensors....
Outside = 12mm x 1.25: 96-98 Style Knock Sensor
Inside = 8mm x 1.25: 99-02 Style Knock Sensor
Easiest thing to do is drill and tap the knock sensor hole on your newer block for the older 12mm knock sensor.
For O2 sensor. Use your original sensor, and use your original header / exhaust manifold. Ensure you use the correct gasket for your model year vehicle to retain the EGR function.
You can use either starter. IE the smaller or larger one. Most people just used the larger older starter.
Use your older 96-98 Low Impedance Injectors and fuel rail...99-02 are High Impedance Injectors. Your old rail will bolt right into place just fine.
Remember to reuse your older intake manifold and EGR system, and swap it over to your newer motor.


Looking to replace your 99-02 LD9 in your 99-02 j-body with a 96-98 Engine. 90% plug-n-play!
First and for most, save all sensors , injectors, EGR, starter, intake manifold, and exhaust manifold...set it aside. You basically using EVERYTHING from your old engine, and swapping it over to the new engine. I mean gaskets and EVERYTHING. If you need any new "external" gaskets buy them for your model year, and not the model year of the engine. If you need new internal gaskets, buy them for your engines model year.
Man concerns / issues.
Knock sensors, Front O2 sensor, starter, EGR / Lack of EGR, and injectors / fuel rails.
First Knock Sensor...Special thanks to ZYaaa "Brad" and Gary The Olde Guy
You'll need this adapter to make it plug-n-play. You can also find a unused bolt hole on the bolt near cylinder 1 or 4. On 99-02 engines the knock sensor is near the pulleys. On 96-98 engines the knock sensor is closer to the transmission.
Outside = 12mm x 1.25: 96-98 Style Knock Sensor
Inside = 8mm x 1.25: 99-02 Style Knock Sensor
You can order inserts from http://mscdirect.com part number 82496860 @ $4.05 for carbon steel or 02232361 @ $13.71 for stainless + shipping of course...



For O2 sensor. Use your original sensor, and use your original header / exhaust manifold. Ensure you use the correct gasket for your model year vehicle to eliminate the EGR function.
You can use either starter. IE the smaller or larger one. Most people just used the smaller newer starter.
Use your newer 99-02 High Impedance Injectors and fuel rail.... 96-98 are Low Impedance Injectors. Your old rail will bolt right into place just fine.
Remember to reuse your newer intake manifold to eliminate the EGR function, and swap it over to your newer motor.

I hope that all made sense. If not PM me or ask here about it!


***General LD9 Engine Data***
Engine Type: Inline 4 Cylinder
Displacement: 2.4 Liter (146 CID)
Liter (VIN): T
RPO: LD9
Bore: 90 mm / 3.54 in
Stroke: 94 mm / 3.70 in
Compression Ratio: 9.5 to 1 from 96-98-----/-----9.7 to 1 from 99-02
Firing Order: 1-3-4-2
Horse Power: 150 @ 5600 rpm
Torque Rating: 155 @ 4400 rpm
Lubrication System
Oil Capacity without Filter Change: 3.75 Liters / 4 Quarts
Oil Capacity with Filter Change: 4.25 Liters / 4.5 Quarts...Almost EVERYWHERE this reads 4 Quarts...Including the GM Service Manuals
Engine Oil Type: SAE 5w30
Engine Cooling System: 10.7 quarts
Brake Fluid: Delco Supreme 11 or DOT-3 Equivalent
Cluch Fluid: Delco Supreme 11 or DOT-3 Equivalent
Refrigerant: R-134a
Power Steering Fluid: GM p/n 1050017
Manual Transmission Fluid: Synchromesh, GM 12345349
Automatic Trans. Fluid: Dexron 3 ATF
Oil Pressure @ 3000 RPM: 207 kPa / 30 psi min.
Oil Pressure @ 900 RPM: 69 kPa / 10 psi min.
Recommended octane: 87
Fuel Tank Capacity: 14.3 gal.
EPA Mileage Estimates: (City/Highway)
Manual: 23 mpg / 33 mpg
Automatic: 22 mpg / 30 mpg
Fuel Delivery: Sequential fuel injection (SFI)
Thermostat opening temperature: 180 degrees F
Emissions: Low emissions vehicle equipped with single Catalyst


***Fastener Tightening Specifications***
Application Specifications
...............................................................................................................................English
Balance Shaft Cover Nut and Bolt........................................................................115 lb in
Balance Shaft Driven Sprocket Bolt (left hand thread).........................................30 lb ft + 45
Balance Shaft Housing Bolts 8 mm hex................................................................89 lb in + 40
Balance Shaft Housing Bolts 10 mm hex..............................................................11 lb ft + 40
Balance Shaft to block Bolts 13 mm hex...............................................................18 lb ft + 70
Balance Shaft to block Bolts 15 mm hex............................................................... 39 lb ft
Balance Shaft to Block Bolts 18 mm hex............................................................. 30 lb ft + 60
Camshaft (exhaust) Rear Cover............................................................................124 lb in
Camshaft Position Sensor Bolt............................................................................ 89 lb in
Camshaft Sprocket to the Camshaft Bolt.............................................................52 lb ft
Connecting Rod Nuts............................................................................................18 lb ft + 80
Coolant Bleeder Valve Fully Driven, Seated , Not Stripped
Coolant Outlet to Cylinder Head..........................................................................19 lb ft
Coolant Pump Cover to the Block........................................................................19 lb ft
Coolant Pump to the Coolant Pump Cover..........................................................124 lb in
Coolant Pump to the Timing Chain Housing........................................................19 lb ft
Crankshaft Balancer to the Crankshaft..................................................................129 lb ft + 90
Crankshaft Bearing Cap Bolts................................................................................15 lb ft + 90
Crankshaft Position Sensor to Block.....................................................................80 lb in
Cylinder Head Bolts Refer to Procedure
Cylinder Head Threaded Plug............................................................................... 19 lb ft
EGR Pipe to the EGR Adapter.............................................................................19 lb ft
Engine Coolant Air Bleed Pipe ..............................................................................124 lb in
Engine Coolant Air Bleed Pipe Nut........................................................................31 lb ft
Engine Coolant Temperature Gauge Sensor to the Cylinder Head
Fully Driven, Seated, Not Stripped
Engine Coolant Temperature Sensor to the Coolant Outlet....................................97 lb in
Engine Lift Bracket..................................................................................................68 lb ft
Engine Mount Bracket Adapter to Block Bolt Auto Trans.................................... 44 lb ft + 60
Engine Mount Bracket Adapter to Block Bolt Manual Trans..................................44 lb ft + 60
Engine Mount (right hand side) to the Body Support Bolt..................................... 49 lb ft
Engine Mount (right hand side) to the Body Support Nut...................................... 32 lb ft
Engine Mount (right hand side) to the Engine Mount Bracket Bolts.......................46 lb ft
Engine Mount Strut..................................................................................................74 lb ft
Engine Mount Strut Bracket Bottom Bolts.............................................................. 96 lb ft
Engine Mount Strut Bracket Front Bolts..................................................................49 lb ft
EVAP Canister Purge Valve Solenoid Bracket Bolt..................................................72 lb in
Exhaust Manifold Brace to the Exhaust Manifold Bolt.............................................41 lb ft
Exhaust Manifold Brace to the Oil Pan Nuts............................................................19 lb ft
Exhaust Manifold to the Cylinder Head Nut............................................................11 lb ft
Exhaust Manifold to the Cylinder Head Studs......................................................... 97 lb in
Exhaust Manifold Upper Heat Shield to the Manifold Bolts...................................124 lb in
Flywheel to Clutch Cover .....................................................................................15 lb ft + 45
Flywheel to the Converter.......................................................................................49 lb ft
Flywheel to the Crankshaft....................................................................................22 lb ft + 45
Front Cover to the Timing Chain Housing................................................................106 lb in
Fuel Pipe Bracket to the Camshaft Housing.............................................................11 lb ft +30
Fuel Pipe to the Fuel Rail Nut...................................................................................22 lb ft
Fuel Rail to the Camshaft Housing............................................................................19 lb ft
Ignition Coil and Module Assembly to the Camshaft Housings...............................16 lb ft
Intake Manifold to the Cylinder Head Bolts/Nuts....................................................18 lb ft
Intake Manifold to the Cylinder Head Studs........................................................... 97 lb in
Knock Sensor.............................................................................................................15 lb ft
Oil/Air Separator To Block Bolts..............................................................................18 lb ft
Oil Dipstick Tube Bolt/Screw...................................................................................71 lb in
Oil Filter Connector to the Block..............................................................................21 lb ft
Oil Filter to the Block 3/4 to one complete turn after gasket contact
Oil Pan Bolts.............................................................................................................18 lb ft
Oil Pan Bolts, Second Set.........................................................................................106 lb in
Oil Pan Drain Plug.....................................................................................................19 lb ft
Oil Pan Studs ...........................................................................................................19 lb ft
Oil Passage Plug Bolt................................................................................................ 22 lb ft
Oil Passage Plugs, 1/4x18 ...........................................................................................15 lb ft
Oil Passage Plugs, 3/8x18............................................................................................22 lb ft
Oil Passage Plugs, Block 1/8x27................................................................................89 lb in
Oil Pressure Switch......................................................................................................124 lb in
Oil Pump Cover to the Oil Pump Housing - Short Bolt............................................89 lb in
Oil Pump to the Balance Shaft Housing - Long Bolts..............................................106 lb in
Oxygen Sensor To Exhaust Manifold.........................................................................31 lb ft
Power steering Pipe to the Pump Nut........................................................................20 lb ft
Power steering Pump to the Cam Carrier Bolts.........................................................19 lb ft
Rear Crankshaft Seal Housing to Block.................................................................... 106 lb in
Spark Plugs to the Cylinder Hea...............................................................................13 lb ft
Starter to the Block Bol..............................................................................................66 lb ft
Tensioner to Tensioner Bracket Nut.......................................................................... 40 lb ft
Throttle Body to the Intake Manifold.........................................................................89 lb in
Thrust Plate to the Balance Shaft Housing.................................................................. 115 lb in
Timing Chain Housing to the Block Bolts/Studs..........................................................21 lb ft
Timing Chain Housing to the Camshaft Housings.......................................................19 lb ft
Timing Chain Tensioner to Housing and Block............................................................89 lb in
Transaxle To Block Bolt................................................................................................43 lb ft
Transaxle To Block Nut................................................................................................49 lb ft
Transaxle To Block Stud...............................................................................................115 lb in


References used: GM manuals, Cilton Manual, J-body.org, NY-J-body Web-site, Wikipedia Web-site, fellow org members, and I missed a bunch! ENJOY!


Edited 3 time(s). Last edited Tuesday, September 11, 2012 8:52 AM



Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 10:06 AM
If the ecotec gets a sticky, so should this!!
Nice posting.



Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 10:26 AM
Yayyyyy I got *new oiling passages* in my 99 lolol

Thx.











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:07 AM
Well I for sure see some stuff that needs to be corrected. 1 being the 00+ O2 sesnor is not a 3 wire, it is a 2 wire. Also 99 was not the year of the better intake manifold ( 96-99, maybe half year) had the better manifold. 00+ started the manifold with the lip. Also this info about the oil passages being newer etc... This info I have never heard of (not saying it can not be true), but I have been around since before the ORG was and this has never been said. It always seems to be said that the 2.4 has bad oiling system in general. I think this info should be verified.



FU Tuning



Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:39 AM
Correct me if I'm wrong, but I was pretty sure that the 96-99 ld9 has "dished" pistons and not "domed."


-

"Youth in Asia"...I don't see anything wrong with that.
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:41 AM
The information I got from the oil passages came from a GM website where I got the part numbers and versions of the engines. I was looking up RPO descriptions when I came across that information. I know my 99 does not have the lip on the intake manifold.
Yes the O2 sensor wires should be fixed. I not being a mod can not change it.





Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:49 AM
Brian Whalen wrote:

Correct me if I'm wrong, but I was pretty sure that the 96-99 ld9 has "dished" pistons and not "domed."
Some 99's had flat top pistons


2004 Grand Prix GTP (Competition Group)
SOLD-->1999 Z24 5M-#30 to register on JBO
"You can please some of the people some of the time but you can't please all the people'
all the time


Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:50 AM
thank you, thank you... sticky!!!!




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 11:52 AM
^^Yup, my 99 has the flat tops..











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 12:03 PM
Flat top on my 99 here too.




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 12:07 PM
-MD- LD9 wrote:

The information I got from the oil passages came from a GM website where I got the part numbers and versions of the engines. I was looking up RPO descriptions when I came across that information. I know my 99 does not have the lip on the intake manifold.
Yes the O2 sensor wires should be fixed. I not being a mod can not change it.


We;; being that 99 was a half year it could have gotten a 00+ intake manifold, but 00+ DOES not have the better one, 96-98 does. I know this for a fact also it was John Lenko who first brought that info out for us.



FU Tuning




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 12:11 PM
There are somethings that are a little off. But can quickly be fixed. Eitherway for some, it may be helpful.

-In 2001 it also recieved a "higher capacity" cataytic converter.
-Torque Rating is: 155 @ 2400-4400 rpm
-Fuel Tank Capacity varies from 14.1-15.2 gal.
-Oil Capacity with Filter Change 4.5 qts. (Who changes the oil with out changing the filter?)






>>>For Sale? Clicky!<<<
-----The orginal Mr.Goodwrench on the JBO since 11/99-----

Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 12:29 PM
Brian Whalen wrote:

Correct me if I'm wrong, but I was pretty sure that the 96-99 ld9 has "dished" pistons and not "domed."


all my older engines ive tore apart (96, 97, and a 98) all had the "dished" pistons, which are readily available for around $120.00 at usually any autoparts store. however, in my many attempts at gaining a few HP cuz of the tiny C/R increase, i have been unsuccesful in finding a parts house BESIDES GM itself that sells the "flat-tops". the flat-tops from gm are around $60 each. which IMO, is outrageous.

if you compare the different pistons, if you dont look close, u cant even tell the difference. but there is indeed a difference.




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 1:06 PM
96-98 are mostly the same... 99-02 are mostly the same. There was no "early 99" engine in the J-car... but very few N-cars DID have 99 with EGR. I've seen a whopping one in my travels.

The 96-98 intake manifold has EGR input... 99 does not. 00 does not, but it has the dreaded lip that carried thru to 2002. So 99 is an unique year, but nothing due to EGR.

Starter changed in 01 again, more efficient design. Same case size as 99 and 00 tho.

Tensioner changed for 00.. maybe 99, can't remember right now.


I'll add this to the FAQ once we sort all the details out Guess I better do that with the Ecotec one too... heh...


...j





Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 1:14 PM
00 was the tensioner change. I know this from when i was looking for a new one.




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, December 19, 2006 2:53 PM
STICKYYYYYYYYY!!!!!!!!!!!!!!!!!!!!!!!


NEW SIG COMING SOON FOR 07'!!!
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Wednesday, December 20, 2006 12:57 AM
My 01 has a 2 wire front O2 sensor.

Good info, sticky!

If you have access to the GM info i would really like a write up on suspention bolt torque #'s. Things like the lower rear shock bolt, engine mounts, and sway bar mounts and any others people use. That would be awsome.

PSN ID: Phatchance249

Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Wednesday, December 20, 2006 1:11 AM
If it wasn't clear I know it should be in the suspention forum and posted so others can see it.

Man I sound retarted, long day.

Thanks

PSN ID: Phatchance249

Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Sunday, December 24, 2006 9:59 PM
why isn't this stickied like the ecotec one?




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Wednesday, December 27, 2006 9:45 AM
Is there any adapters (sp?) to make the different knock sensors work????

And if I got a motor that didn't have the egr valve and tried to put it in a car that the motor did have one, would that be the reason that the service engine soon light would stay on????

This is a great post, definitely needs to be a sticky.
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Thursday, December 28, 2006 8:51 AM
Just use the intake manifold and exhaust manifold that came with your car for your EGR CONCERNS. Also you can make an adapter or re-drill and re-tap to make the knock sensor fit properly.





Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Tuesday, January 02, 2007 3:35 AM
Weres the Sticky???
No LOVE.




Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Wednesday, January 03, 2007 6:46 PM
sticky this. jesus christ are the mods really that lazy? or ecotec whores?


-Trailblazer SS - not so custom 6.0L - custom intake - custom tune
- (1) 2.4L on an engine stand (1) blown trans (2) good quad trans (1) eco trans = party

Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Wednesday, January 03, 2007 7:53 PM
Hmm...I have 3 shortblocks in my garage, various years, all with flat-tops. My built motor had flattops as well.
Re: LD9 2.4 Twin Cam - Overview, Torque, Fluid, and Engine Specs new
Saturday, June 23, 2007 4:09 PM
sticky!!!!!
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